Thermal structure of intense convective clouds derived from GPS radio occultations

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Thermal structure of intense convective clouds derived from GPS radio occultations. / Biondi, Riccardo; Randel, W. J.; Ho, S. -P.; Neubert, Torsten; Syndergaard, S.

In: Atmospheric Chemistry and Physics, Vol. 12, No. 12, 2012, p. 5309-5318.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Biondi, Riccardo; Randel, W. J.; Ho, S. -P.; Neubert, Torsten; Syndergaard, S. / Thermal structure of intense convective clouds derived from GPS radio occultations.

In: Atmospheric Chemistry and Physics, Vol. 12, No. 12, 2012, p. 5309-5318.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{b7e2a14782914665a668431e630c17fd,
title = "Thermal structure of intense convective clouds derived from GPS radio occultations",
publisher = "Copernicus GmbH",
author = "Riccardo Biondi and Randel, {W. J.} and Ho, {S. -P.} and Torsten Neubert and S. Syndergaard",
year = "2012",
doi = "10.5194/acp-12-5309-2012",
volume = "12",
number = "12",
pages = "5309--5318",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",

}

RIS

TY - JOUR

T1 - Thermal structure of intense convective clouds derived from GPS radio occultations

A1 - Biondi,Riccardo

A1 - Randel,W. J.

A1 - Ho,S. -P.

A1 - Neubert,Torsten

A1 - Syndergaard,S.

AU - Biondi,Riccardo

AU - Randel,W. J.

AU - Ho,S. -P.

AU - Neubert,Torsten

AU - Syndergaard,S.

PB - Copernicus GmbH

PY - 2012

Y1 - 2012

N2 - Thermal structure associated with deep convective clouds is investigated using Global Positioning System (GPS) radio occultation measurements. GPS data are insensitive to the presence of clouds, and provide high vertical resolution and high accuracy measurements to identify associated temperature behavior. Deep convective systems are identified using International Satellite Cloud Climatology Project (ISCCP) satellite data, and cloud tops are accurately measured using Cloud-Aerosol Lidar with Orthogonal Polarization (CALIPSO) lidar observations; we focus on 53 cases of near-coincident GPS occultations with CALIPSO profiles over deep convection. Results show a sharp spike in GPS bending angle highly correlated to the top of the clouds, corresponding to anomalously cold temperatures within the clouds. Above the clouds the temperatures return to background conditions, and there is a strong inversion at cloud top. For cloud tops below 14 km, the temperature lapse rate within the cloud often approaches a moist adiabat, consistent with rapid undiluted ascent within the convective systems.

AB - Thermal structure associated with deep convective clouds is investigated using Global Positioning System (GPS) radio occultation measurements. GPS data are insensitive to the presence of clouds, and provide high vertical resolution and high accuracy measurements to identify associated temperature behavior. Deep convective systems are identified using International Satellite Cloud Climatology Project (ISCCP) satellite data, and cloud tops are accurately measured using Cloud-Aerosol Lidar with Orthogonal Polarization (CALIPSO) lidar observations; we focus on 53 cases of near-coincident GPS occultations with CALIPSO profiles over deep convection. Results show a sharp spike in GPS bending angle highly correlated to the top of the clouds, corresponding to anomalously cold temperatures within the clouds. Above the clouds the temperatures return to background conditions, and there is a strong inversion at cloud top. For cloud tops below 14 km, the temperature lapse rate within the cloud often approaches a moist adiabat, consistent with rapid undiluted ascent within the convective systems.

UR - http://www.atmos-chem-phys.net/12/5309/2012/acp-12-5309-2012.html

U2 - 10.5194/acp-12-5309-2012

DO - 10.5194/acp-12-5309-2012

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 12

VL - 12

SP - 5309

EP - 5318

ER -